Device for picking and tightening screw

Abstract

A device for lifting and tightening screws includes a transporting unit to move the device to a screw suction position or a screw locking position, a suction nozzle unit, a vacuum generator, and an electronic screwdriver unit. When the device is moved to a position to attract and apply suction to a screw, the suction nozzle unit captures a screw. When the device is moved to the screw locking position, the electronic screwdriver unit tightens the screw. The device prevents the suction nozzle from contacting the workpiece, guides a suction position of the screw, and can function in relation to screw holes surrounded by steps and barriers.

What is claimed is: 
     
       1. A device for picking and tightening screws, driven by a motor, comprising:
 a transporting unit configured to drive the device to move to a screw suction position or a screw locking position, the transporting unit comprising a baseplate, a sliding rail arranged on the baseplate, and a main shaft fixedly coupled to the baseplate, wherein the sliding rail comprises a rail, an upper sliding block arranged on the rail, and a lower sliding block arranged on the rail; 
 a suction nozzle unit fixedly coupled to the transporting unit, wherein when the device is moved to the screw suction position, the suction nozzle unit is configured to attract a screw by suction; 
 a vacuum generator fixedly coupled to the suction nozzle unit and configured to generate a vacuum to drive the suction nozzle unit to apply suction to the screw; and 
 an electronic screwdriver unit fixedly coupled to the transporting unit, wherein when the device is moved to the screw locking position, the electronic screwdriver unit is configured to tighten the screw. 
 
     
     
       2. The device of  claim 1 , wherein the suction nozzle unit comprises a suction nozzle connecting member, a guide pillar, a power mechanism, a first spring, a first bolt, and a suction nozzle, the suction nozzle connecting member is fixedly coupled to the lower sliding block, the lower end of the guide pillar is coupled to the suction nozzle connecting member, the upper end of the guide pillar is coupled to the electronic screwdriver unit, the power mechanism is coupled to the suction nozzle connecting member, the first spring is sleeved on the guide pillar, the first bolt is located on a baseplate of the suction nozzle connecting member, the suction nozzle is coupled to a lower end of the suction nozzle connecting member. 
     
     
       3. The device of  claim 2 , wherein the electronic screwdriver unit comprises a fixing member, a second spring, a second bolt, a block, an electronic screwdriver, and a screwdriver head, the fixing member defines an extending column extending up and down from an inside of the fixing member, the second spring is sleeved on an upper end of the extending column, the second bolt is screwed with the upper end of the extending column, the block is sleeved on a lower end of the extending column, the electronic screwdriver is fixedly coupled to the lower end of the fixing member and supported by the fixing member, the screwdriver head is fixedly coupled to the electronic screwdriver and extended into the electronic screwdriver. 
     
     
       4. The device of  claim 3 , wherein the second bolt adjusts an elastic force of the second spring applied to the electronic screwdriver unit by adjusting the degree of compression applied to the second spring. 
     
     
       5. The device of  claim 3 , wherein the electronic screwdriver unit further comprises a sensor, the sensor is arranged within the electronic screwdriver and configured to detect the number of turns and a torque applied to the screw. 
     
     
       6. The device of  claim 3 , wherein the suction nozzle is sleeved on the screwdriver head of the electronic screwdriver unit. 
     
     
       7. The device of  claim 2 , wherein the first bolt adjusts an elastic force of the first spring applied to the suction nozzle unit by adjusting the degree of compression applied to the first spring. 
     
     
       8. The device of  claim 2 , wherein the vacuum generator communicates with an opening defined on a side of the suction nozzle, an upper end of the suction nozzle is coupled to and sealed by the suction nozzle. 
     
     
       9. The device of  claim 1 , wherein the upper sliding block is coupled to the electronic screwdriver unit and configured to drive the electronic screwdriver unit to slide up and down on the rail, the lower sliding block is coupled to the suction nozzle unit and configured to drive the suction nozzle unit to slide along on the rail, the main shaft is configured to drive the device to move to a required position.